I saw another thread but the pictures look a little different. I have attached pictures of the leaves of the roma tomatoes we have growing from a small pot. Having never grown tomatoes before I don't know what I am looking at. I tried finding similar pics on the internet but haven't found them. Can anyone help? So far the tomatoes coming from the plant are quite good. But I would like to know how to do better or avoid this type of discolouration if it is a pest or something. Thanks.